Excuse me, but I was wondering if I could get some clarification on a matter regarding cryptocurrency. Specifically, I'm interested in knowing if CoinJar, a popular platform for buying, selling, and managing digital currencies, is available for use in the United States. As someone who's looking to expand my portfolio into the world of cryptocurrencies, it's important for me to understand which platforms are accessible and trustworthy in my region. Could you please provide some insight into this? Thank you in advance for your help.